<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>.sk-cube-grid {
        width: 40px;
        height: 40px;
        margin: 100px auto;
    }

    .sk-cube-grid .sk-cube {
        width: 33%;
        height: 33%;
        background-color: #333;
        float: left;
        -webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
        animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
    }

    .sk-cube-grid .sk-cube1 {
        -webkit-animation-delay: 0.2s;
        animation-delay: 0.2s;
    }

    .sk-cube-grid .sk-cube2 {
        -webkit-animation-delay: 0.3s;
        animation-delay: 0.3s;
    }

    .sk-cube-grid .sk-cube3 {
        -webkit-animation-delay: 0.4s;
        animation-delay: 0.4s;
    }

    .sk-cube-grid .sk-cube4 {
        -webkit-animation-delay: 0.1s;
        animation-delay: 0.1s;
    }

    .sk-cube-grid .sk-cube5 {
        -webkit-animation-delay: 0.2s;
        animation-delay: 0.2s;
    }

    .sk-cube-grid .sk-cube6 {
        -webkit-animation-delay: 0.3s;
        animation-delay: 0.3s;
    }

    .sk-cube-grid .sk-cube7 {
        -webkit-animation-delay: 0s;
        animation-delay: 0s;
    }

    .sk-cube-grid .sk-cube8 {
        -webkit-animation-delay: 0.1s;
        animation-delay: 0.1s;
    }

    .sk-cube-grid .sk-cube9 {
        -webkit-animation-delay: 0.2s;
        animation-delay: 0.2s;
    }

    @-webkit-keyframes sk-cubeGridScaleDelay {
        0%, 70%, 100% {
            -webkit-transform: scale3D(1, 1, 1);
            transform: scale3D(1, 1, 1);
        }
        35% {
            -webkit-transform: scale3D(0, 0, 1);
            transform: scale3D(0, 0, 1);
        }
    }

    @keyframes sk-cubeGridScaleDelay {
        0%, 70%, 100% {
            -webkit-transform: scale3D(1, 1, 1);
            transform: scale3D(1, 1, 1);
        }
        35% {
            -webkit-transform: scale3D(0, 0, 1);
            transform: scale3D(0, 0, 1);
        }
    }</style>
</head>
<body>
<div class="sk-cube-grid">
    <div class="sk-cube sk-cube1"></div>
    <div class="sk-cube sk-cube2"></div>
    <div class="sk-cube sk-cube3"></div>
    <div class="sk-cube sk-cube4"></div>
    <div class="sk-cube sk-cube5"></div>
    <div class="sk-cube sk-cube6"></div>
    <div class="sk-cube sk-cube7"></div>
    <div class="sk-cube sk-cube8"></div>
    <div class="sk-cube sk-cube9"></div>
</div>
</body>
</html>